Glass-forming ability and differences in the crystallization behavior of ribbons and rods of Cu_36Zr_48Al_8Ag_8 bulk glass-forming alloy
Glass-forming ability and differences in the crystallization behavior of ribbons and rods of Cu_36Zr_48Al_8Ag_8 bulk glass-forming alloy
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DOI：
10.1557/jmr.2009.0219
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发表时间：
2009-05
影响因子：
2.7
通讯作者：
D. V. Louzguine-Luzgin;G. Xie;Song Li;Qingsheng Zhang;Wei Zhang;C. Suryanarayana;A. Inoue
中科院分区：
文献类型：
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作者：
D. V. Louzguine-Luzgin;G. Xie;Song Li;Qingsheng Zhang;Wei Zhang;C. Suryanarayana;A. Inoue
本文研究了Cu_（36）Zr_（48）Al_（88）Ag_（8）非晶合金快淬薄带和块体试样在加热过程中的晶化行为。用X射线衍射、透射电镜、差示扫描量热法和等温量热法研究了Cu_（36）Zr_（48）Al_（88）Ag_（8）非晶合金的晶化动力学和结构变化。一个明确的比较是由熔融纺薄带和铜模铸造散装棒样品的结晶动力学的差异。有人建议，在棒样品中的结晶动力学，在任何给定的温度下，是有点不同的带状样品，可能是因为尺寸和自由体积的影响。讨论了该合金与其它Cu-Zr-Al-Ag合金晶化行为的差异。
The crystallization behavior of melt-spun ribbons and bulk samples of the Cu_36Zr_48Al_8Ag_8 glassy alloy on heating is presented here. The crystallization kinetics and structural changes in the Cu_36Zr_48Al_8Ag_8 glassy alloy were studied using x-ray diffraction, transmission electron microscopy, differential scanning, and isothermal calorimetry methods. A clear comparison is made of the differences in the crystallization kinetics of the melt-spun ribbons and the copper-mold-cast bulk rod samples. It was suggested that the kinetics of crystallization in the rod sample, at any given temperature, are somewhat different than in the ribbon samples, probably because of size and free volume effects. Differences in the crystallization behavior of this alloy with other Cu-Zr-Al-Ag alloys have also been discussed.